On Sat, May 26, 2012 at 9:32 PM, Tomek CEDRO <tomek.ce...@gmail.com> wrote: > The main difference between LibSWD and Versaloon approach is that LibSWD > takes DAP operations and translates them to/from bitstream at host level so > it can be applied to any interface which makes it very generic solution, > while Versaloon takes DAP operations and transfers them into interface that > takes care of bitstream generation/analysis which makes things faster over > high latency links like USB but it requires complex firmware for > interface...
Thanks. I tend to assume that intelligent (MCU based) HW debugger will usually go the Versaloon route -- to use the firmware for the value-added thingy. Your generic approach is probably more suitable for the dumb HW debugger like those FTDI based ones. So I would not say that your approach is really generic but rather lowest denominator approach -- without a brain on the HW debugger side, the host has to take over. I will assume that J-Link firmware has taken care some of the things similar to Versaloon approach. So it is probably good to forget about libswd for the J-Link SWD work, am I right to say that? The ST-Link is another example with SWD support, it only offers high level API, the complexity is handled by FW. So OpenOCD does support SWD with ST-Link, even without much SWD codes on the OpenOCD side. http://www.st.com/internet/evalboard/product/251168.jsp http://www.st.com/internet/evalboard/product/219866.jsp http://www.st.com/internet/evalboard/product/253215.jsp (OpenOCD supports the STM32F0 which is SWD only if using ST-Link). -- Xiaofan ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ OpenOCD-devel mailing list OpenOCD-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/openocd-devel
